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Brazilian rainbow boa morph calculator
Epicrates cenchria — Rainbow boa morphs are few and mostly recessive; most of the value in the hobby is in line-bred red intensity and clean high-contrast patterning.
Sire ♂
1 gene
Hypomelanistic
Incomplete dominant
Dam ♀
1 gene
Hypomelanistic
Incomplete dominant
Clutch odds per egg
2 possible hatchlings · updates liveLeft out of the percentages because they are polygenic or line-bred — log them on the animal instead: High red, Extreme contrast, Locality line (BRB vs Colombian).
Learn before you pair
Questions keepers ask
- Are predicted morph percentages guaranteed in a clutch?
- No. Each percentage is a probability for an individual egg. A small clutch can differ substantially from the expected ratio.
- Can a photograph prove a recessive het?
- No. Record documented parentage, breeding evidence or appropriate genetic testing separately from visual appearance. A possible het remains a probability, not a proven carrier.
- Can line-bred traits be predicted with a Punnett square?
- Not reliably. Line-bred and polygenic traits involve selection and multiple influences; keep their descriptions in animal records rather than treating them as simple single-gene odds.